Download App

Separation of Substances — Science STD 6 — Question

CBSE BoardEnglish MediumSTD 6ScienceSeparation of Substances1 Mark
MCQ
DIRECTIONS: The questions in this segment consists of two statements, one labelled as "Assertion and the other labelled as "Reason $R$ ". You are to examine these two statements carefully and decide if he Assertion $A$ and Reason $R$ are individually true and if so, whether the reason is a correct explanation if the assertion. Select one of the current options, and given below in each questions.
Assertion A: The process of settling of heavier insoluble particles from a suspension of a substance in water known as decantation.
Reason R: This process along with sedimentation is used to get clear water from muddy water.
  • A
    Both $A$ and $R$ are true and $R$ is the correct explanation of $A$
  • B
    Both $A$ and $R$ are true but $R$ is not the correct explanation of $A$
  • ✓
    $A$ is true but $R$ is false
  • D
    $A$ is false but $R$ is true
✓

Answer

Correct option: C.
$A$ is true but $R$ is false

Assertion$-A$ is incorrect. The process is called sedimentation.
Reason$-R$ is correct.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Assertion (A) & Reason (B) MCQ" from Separation of Substances→Separation of Substances — all question types→Science STD 6 question papers→CBSE Board STD 6 question papers→CBSE Board question paper generator→

Similar questions

Assertion (A): The unit of any physical quantity which is acceptable to all of the people as basic unit is called standard unit.
Reason (R): SI units is the set of units used to maintain uniformity all over the world.
→
Directions: The questions in this segment consists of two statements, one labelled as "Assertion $A"$ and the other labelled as "Reason $R"$. You are to examine these two statements carefully and decide if the Assertion $A$ and Reason $R$ are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below.
Assertion A: The explosion of a fire cracker sis a physical changes.
Reason R: A physical change is a reversible change.
→
DIRECTIONS: The questions in this segment consists of two statements, one labelled as? Assertion $A?$ and the other labelled as? Reason $R?$. You are to examine these two statements carefully and decide if the assertion $A$ and reason $R$ are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below.
Assertion (A): After a landfill site is completely filled with garbage it is converted into a park.
Reason (R): At a landfill site that has been converted into a park, no building is allowed to be constructed for next 50 years.
→
Fill in the blank with appropriate words:
On large scale, cotton clothes are made by machines in ________.
→
Assertion (A): Materials that are shiny are called lustrous materials.
Reason (R): Metals are usually dull.
→
Assertion (A): Substances which do not mix with water are called insoluble.
Reason (R): They do not disappear in water even after stirring for a long time.
→
Directions: The questions in this segment consists of two statements, one labelled as "assertion $A"?$ and the other labelled as "reason R". You are to examine these two statements carefully and decide if the assertion $A$ and reason $R$ are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below.
Assertion (A): Deficiency of calcium causes rickets.
Reason (R): In our diet milk and milk products are the major source of calcium.
→
Assertion$(A)$: Mehrgarh is believed to be one of the places where people learnt to grow Barley and Wheat and rear sheep and goats for the first time. Reason$(R)$: At this site many animal bones were found which gave evidence supporting the assertion given above.
→
Assertion$(A)$: Archaeologists have managed to understand and find out even the minutest of details when it comes to the habits and methods of the hunters and gatherers.
Reason$(R):$ Along with technological advancement, the various tools used and the fossil remains left by our ancestors played a huge role in unearthing their habits.
→
Assertion (A) : Materials that are not attracted towards magnet are called nonmagnetic.
Reason: Non-magnetic materials cannot be converted into magnets.
→